- Add XBPS build and sign steps to CI workflow - Add XBPS publication as independent gate (requires manual trigger) - Track format availability in release notes - Update release-footer.md with XBPS install instructions - Add --available/--withheld arguments to extract_changelog.py - Attach XBPS artifacts to Gitea release - Clean up XBPS signing key material after use Co-authored-by: CommandCodeBot <noreply@commandcode.ai>